U.S. patent application number 11/422770 was filed with the patent office on 2007-12-13 for peroral powder delivery device.
This patent application is currently assigned to BIOACTIS LIMITES. Invention is credited to Tatsuo TSUTSUI.
Application Number | 20070283955 11/422770 |
Document ID | / |
Family ID | 38820624 |
Filed Date | 2007-12-13 |
United States Patent
Application |
20070283955 |
Kind Code |
A1 |
TSUTSUI; Tatsuo |
December 13, 2007 |
PERORAL POWDER DELIVERY DEVICE
Abstract
A peroral powder delivery device having the capability to
completely aspirate a peroral powder in the capsule through an oral
cavity with simple operation to make holes in a capsule that
contains a peroral powder such as a powdery medicine or a powdery
supplement, a simple structure enabling the reduced manufacturing
cost, and a user-friendly operation, in which a capsule holder for
loading the capsule into a body is attached so as to be capable of
advancing into and retracting from the inside of the body, the body
has a cutter blade to make holes on both ends of the capsule as it
advances into the body being held by the capsule holder, first and
second air passageways having connection ports in communication
with the holes in the capsule loaded in the body, the first air
passageway has an inhaling port for inhaling the peroral powder in
the capsule and the second air passageway has a suction valve that
opens by the inhaling force from an inhaling port introduce air
into the capsule.
Inventors: |
TSUTSUI; Tatsuo; (Kanagawa,
JP) |
Correspondence
Address: |
GREENBLUM & BERNSTEIN, P.L.C.
1950 ROLAND CLARKE PLACE
RESTON
VA
20191
US
|
Assignee: |
BIOACTIS LIMITES
Tokyo
JP
|
Family ID: |
38820624 |
Appl. No.: |
11/422770 |
Filed: |
June 7, 2006 |
Current U.S.
Class: |
128/203.15 ;
128/203.12 |
Current CPC
Class: |
A61M 15/002 20140204;
A61M 2206/16 20130101; A61M 15/004 20140204; A61M 15/0038 20140204;
A61M 15/0028 20130101; A61M 2202/064 20130101 |
Class at
Publication: |
128/203.15 ;
128/203.12 |
International
Class: |
A61M 15/00 20060101
A61M015/00 |
Claims
1. A peroral powder delivery device to deliver a unit dose of a
peroral powder through an oral cavity in which a capsule holder for
holding a capsule that contains a peroral powder and loading the
same is attached into a body so as to be capable of advancing into
and retracting from the inside of the body in a direction
perpendicular to the longitudinal direction of the capsule held by
the capsule holder, the body has a cutter blade for cutting both
ends of the capsule when it advances into the body while being held
by the capsule holder and making holes on both ends of the capsule,
and a fist air passageway having a connection port in communication
with a hole made on one end of the capsule when the capsule is
loaded in the body and a second air passageway having a connection
port in communication with a hole made on the other side of the
capsule, the first air passageway has an inhaling port for inhaling
the peroral powder in the capsule, and the second air passageway
has a suction valve which opens by the suction force or inhalation
force from the inhaling port to introduce air into the capsule.
2. A peroral powder delivery device according to claim 1, wherein
the capsule is held to the capsule holder slidably in the
longitudinal direction thereof and a positioning guide is disposed
for sliding the capsule that advances into the body being held by
the capsule holder in the longitudinal direction and guiding both
ends of the capsule to be cut by the cutter blade such that both
ends of the capsule situate at predetermined positions.
3. A peroral powder dosing device according to claim 2, wherein the
distance between the connection port of the first air passageway
and the connection port of the second air passageway is set shorter
than the length of the capsule after the both ends have been cut by
the cutter blade such thon both ends of the capsule loaded
therebetween are urged by peripheral edges of both of the
connection ports.
4. A peroral powder delivery device according claim 1 wherein the
diameter of the holes made to both ends of the capsule by the
cutter blade is set to s size substantially identical with or
larger than the opening diameter for each of the connection ports
in communication with the hole.
5. A peroral powder delivery device according to claim 1, wherein
the cutter blade comprises a pair of blades secured in parallel
with each other with the blade tips being directed in the direction
opposing to the advancing direction of the capsule that advances
into the body being held by the capsule holder, the positioning
guides comprise a pair of protrusions, and a pocket is formed
between the blade and the protrusion disposed on the near side of
the blade for discharging cut ends of the capsule cut by the
blade.
6. A peroral powder delivery device according to claim 1, wherein
the suction valve has a disciform poppet that protrudes from the
connection port of the second air passageway and advances from the
hole of the capsule in communication with the connection port to
the inside of the capsule when the valve is opened.
7. A peroral powder delivery device according to claim 1, wherein a
mixer chamber is formed in the first air passageway for generating
a turbulent flow to the air inhaled from the inhaling port thereby
finely separating and dispersing grains of the peroral powder
inhaled together with air from the inside of the capsule.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention concerns a peroral powder delivery
device to deliver a peroral powder such as a powdery medicine or a
powdery supplement, through an oral cavity.
[0003] 2. Description of the Related Art
[0004] As one of methods of dosing a medicine to lungs of asthma
patients, etc., a method to inhale a unit dose of powdery medicine
in a capsule by making holes in the capsule has been known and, as
a delivery device used for the dosing method, an inhaling type
dosing device, for example, as shown in FIG. 8 and FIG. 9 has been
proposed (refer to JP No. 3372105).
[0005] The delivery device includes a body 80 for loading a capsule
C that contains a powdery medicine, a capsule holder 81 that holds
the capsule C to be loaded in the body 80, and a hole making member
82 having a pair of pins 83, 83 to pierce the body of the capsule C
which is loaded being held by the capsule holder 81 in the body so.
Upon dosing the powdery medicine contained in the capsule C into
lungs through an oral cavity, a cylindrical capsule holder 81 is at
first fitted to a cylindrical holder receiving section 84 formed to
the body 80, the capsule C is inserted into a capsule receiving
bore 85 formed along the central axis of the capsule holder 81.
Then, a pair of pin insertion holes 86, 86 formed in the peripheral
wall of the holder receiving section 84 and a pair of pin insertion
holds 87, 87 formed so as to pierce the peripheral wall of the
capsule holder 81 are positioned so as to be in communication with
each other. Then, pins 83, 83 of the hole making member 82 are
inserted from the pin insertion holes 86, 86 of the holder
receiving section 84 into the pin insertion holes 87, 87 of the
capsule holder 81, thereby making four holes in total in the body
of the capsule C held in the capsule receiving bore 85 of the
capsule holder 81. Then, the pins 83, 83 of the hole making member
82 are withdrawn from the pin insertion holes 87, 87 to attain a
state where the pins are remained in the pin insertion holes 86,
86. In this state, an inhaling port 89 of an inhaling mouth piece
88 formed integrally with the holder receiving section 84 of the
body 80 is put in a patient's mouth for inhalation of the
powder.
[0006] Thus, air is sucked into the inhaling mouth piece 88 through
a pair of air passageways 90, 90 which are formed in parallel with
each other on both sides of the capsule receiving bore 85 in
perpendicular to the pin insertion holes 87, 87 of the capsule
holder 81, and a portion of air passing the air passageways 90, 90
flows through the inside of the pierced body of the capsule C, by
which the powdery medicine is discharged from the inside of the
capsule C, inhaled from the inhaling port 89 of the inhaling mouth
piece 88, and dosed into lungs.
[0007] Then, in a case of ejecting the spent capsule C from the
capsule receiving bore 85 of the capsule holder 81, the capsule
holder 81 is at first drawn out of the holder receiving section 84
of the body 80. Then, a needle is inserted from a small hole 91
opened at the bottom of the capsule receiving bore 85 of the
capsule holder 81 into the capsule receiving bore 85 thereby
pushing out the capsule C held in the capsule receiving bore
85.
[0008] However, since the delivery device described above is
extremely complicated in the structure and needs a number of
individual parts, it involves a drawback that the manufacturing
cost is extremely expensive. Further, the operation procedure of
the device is also extremely complicated and it requires
troublesome operations, upon making holes in the capsule C, of
positioning the pin insertion holes 8G, 86 formed in the holder
receiving section 84 of the body 80 and the pin insertion holes 87,
87 formed in the capsule holder 81 to be fitted in the holder
receiving section 84 so as to be in communication with each other
and inserting the pins 83, 83 of the hole making member 82 into the
pin insertion holes 86, 86 and 87, 87.
[0009] Further, after making the holes in the capsule C, it is
necessary for extracting the pins 83, 83 of the hole making member
82 from the pin insertion holes 87, 87 thereby making the holes of
the capsule C and the air passageways 90, 90 closed so far by the
pins 83, 83, while leaving the top ends of the pins 83, 83 in the
pin insertion holes 86, 86 in order not to open the pin insertion
holes 86, 86 in communication with the air passageway 90 by way of
the pin insertion holes 87, 87. With no such operations, the
powdery medicine in the capsule C can not be inhaled. In a case
where the pins 83, 83 are not completely extracted out of the pin
insertion holes 87, 87 or in a case where the pins 83, 83 are drawn
out erroneously also from the pin insertion holes 86, 86, it is
difficult to inhale the powdery medicine in the capsule C.
[0010] Further, also in a case of ejecting the spent capsule C
through the capsule receiving bore 85 of the capsule holder 81, it
requires a troublesome operation of inserting the needle from the
small hole 91 opened at the bottom of the capsule receiving bore 85
and pushing out the capsule C.
[0011] Further, since the dosing device described above has such a
structure that respective parts of the body 80, the capsule holder
81, and the hole making member 82 are separated from each other, it
may be a worry that the device can no more be used when any one of
the parts is lost. Further, since the capsule C is made holes by
piercing the pins 83, 83 of the hole making member 82, burrs of the
capsule C formed upon piercing the pin 83 protrude to the periphery
of the holes to hinder the flow of air flowing inside the capsule
C. Further, since air flowing through the capsule C upon inhalation
by putting an inhaling port 89 of an inhaling mouth piece 88 in the
mouth flows inward and outward by way of the pin insertion holes
87, 87 which are perpendicular to the air passageways 90, 90,
neither large flow volume nor high flow velocity can be produced.
Accordingly, this may cause a disadvantage that the powder in the
capsule C is not discharged thoroughly but remains partially in the
capsule C and the necessary amount of the medicine is not dosed
into the lungs, or a disadvantage that the particle of the powdery
medicine can not be dosed in a finely separated and dispersed
state.
[0012] Further, it may be a worry that the powder in the capsule C
is spilt by its own weight from the holes made in the capsule C,
scatters into the pin insertion holes 87, 87 and leaks to the
outside passing through the air passageways 90, 90 in communication
with the pin insertion holes 87, 87. It also involves a drawback
that the powder in the capsule C flows to the outside in a case of
erroneously blowing breath from the inhaling port 89 of the
inhaling mouth piece 88.
[0013] By the way, various powdery supplements prepared by
powdering dietary supplements intended for easy intake of
ingredients such as amino acids, proteins, anti-oxidants, various
kinds of vitamins and minerals have been marketed recently. Such
powdery supplements include those incorporated in bottles or in
capsules. Since it is desirable to continuously intake supplements
at a predetermined amount on every times for attaining good
physical balance or improving the physical conditions, the intake
amount is controlled by using a spatula or the like for the
bottle-incorporated powdery supplements and by the number of the
capsules to be taken in a case of encapsulated powdery
supplements.
[0014] However, the bottle-incorporated powdery supplement is
inconvenient to carry about and it is troublesome to take while
measuring the intake amount on every times by the spatula. Further,
while the encapsulated powdery supplement is convenient to carry
about, since it is intaken together with the capsule, this is not
suitable to those who feel difficulty in swallowing capsules.
SUMMARY OF THE INVENTION
[0015] The present invention intends to provide a peroral powder
delivery device having the capability to completely aspirate a
peroral powder in the capsule through an oral cavity with simple
operation to make holes in a capsule that contains a peroral powder
such as a powdery medicine or a powdery supplement, the reduced
manufacturing cost based on a simple structure, and a user-friendly
operation. This is one of principal technical subjects of the
invention.
[0016] The present invention provides a peroral powder delivery
device to dose a unit dose of a peroral powder through an oral
cavity, in which a capsule holder for holding a capsule that
contains a peroral powder and loading the capsule in the body is
attached in the body such that it can advance to and retract from
the inside of the body in the direction perpendicular to the
longitudinal direction of the capsule held by the capsule holder,
the body has cutter blades for cutting both ends of the capsule
when it advances being held by the capsule holder to the inside of
the body, thereby making holes on both ends thereof, and a first
air passageway having a connection port in communication with a
hole made at one end of the capsule and a second air passageway
having a connection port in communication with a hole made at the
other end of the capsule when the capsule is loaded inside the
body, the first air passageway has an inhaling port for inhaling
the peroral powder in the capsule, and the second air passageway
has a suction valve which is opened by a suction force from the
inhaling port to introduce air into the capsule.
[0017] In the peroral powder delivery device according to the
invention, both ends of the capsule are cut by the cutter blade and
made holes on both ends thereof and, at the same time, the holes
made on both ends are in communication with the connection port of
the first air passageway and the connection port of the second air
passageway formed in the body respectively by a simple operation of
merely advancing the capsule holder into the body and loading the
capsule that contains the peroral powder being held by the capsule
holder in the inside of the body In this state, when an inhaling
port formed to the first air passageway is sucked via a mouth, the
suction valve disposed to the second air passageway is opened by
the suction force to introduce air into the capsule and, at the
same time, the peroral powder in the capsule is inhaled from the
inhaling port to the inside of the oral cavity. After dosing the
peroral powder in the capsule through the oral cavity, the spent
capsule held by the capsule holder can be ejected simply by merely
retracting the capsule holder from the inside of the body.
[0018] Accordingly, since the delivery device of the invention can
conduct the operation of loading or discharging the capsule or the
operating of making holes in the capsule by one-touch and the
method of using the device is also extremely simple, there is no
worry of erroneous operation. Further, since the capsule holder for
holding the capsule is attached so as to be capable of advancing to
and retracting from the inside of the body and the cutter blade to
make holes in the capsule is also formed integrally to the body,
there is no worry that the delivery device becomes unusable when
losing any one of the capsule holder, the body, and the cutter.
[0019] Further, since the delivery device according to the
invention is remarkably simplified compared with the existent
delivery device described above in the structure, the manufacturing
cost can be reduced remarkably. Further, since the first air
passageway having the inhaling port, the inside of the capsule made
holes at both ends, and the second air passageway having the
suction valve are connected in series, the peroral powder in the
capsule can be sucked to the outside efficiently by the inhaling
force from the inhaling port and, scattering of the peroral powder
in the capsule to the outside of the body can be prevented by the
suction valve, the peroral powder can be dosed instantaneously with
no loss;
PREFERRED EMBODIMENTS OF THE INVENTION
[0020] In a preferred embodiment of a peroral powder delivery
device according to the present invention, a capsule holder for
holding a capsule that contains a peroral powder to be dosed
through an oral cavity slidably in the longitudinal direction and
loading the capsule to the inside of the body is attached to the
body so as to be capable of advancing to and retracting from the
inside of the body along a direction perpendicular to the
longitudinal direction of the capsule, the body has a cutter blade
for cutting the both ends of the capsule that advances into the
body being held by the capsule holder to make holes on both ends
thereof, and a positioning guide for sliding the capsule that
advances into the body being held by the capsule holder in the
longitudinal direction and guiding both ends of the capsule to be
cut by the cutter blade such that both ends of the capsule situate
at predetermined positions, and a first air passageway having a
connection port in communication with the hole made at one end of
the capsule and a second air passageway having a connection port in
communication with the hole made at the other end of the capsule
when the capsule is loaded in the body, the first air passageway
has an inhaling port for inhaling the peroral powder in the
capsule, and the second air passageway has a suction valve that
opens by the inhaling force from the inhaling port and introduces
air into the capsule.
[0021] Further, the distance between the connection port of the
first air passageway and the connection port of the second air
passageway is set shorter than the length of the capsule after the
both ends have been cut by the cutter blade such that the both ends
of the capsule loaded therebetween are pressed by the peripheral
edges of both of the connection ports, and the diameter of the
holes made on both ends of the capsule by the cutter blade is set
substantially identical with or larger than the opening diameter
for each of the connection ports in communication with the hole.
Further, the suction valve has a disciform poppet that protrudes
from the suction port of the second air passageway and advances
from the hole in communication with the suction port into the
cavity upon opening of the valve.
[0022] Further, the cutter blade comprises a pair of blades secured
in parallel with each other in the direction opposing to the
advancing direction of the capsule that advances into the body
being held by the capsule holder. The positioning guide comprises a
pair of protrusions and a pocket is formed between the blade member
and the protrusion disposed on near side thereof for discharging
the cut ends of the capsule cut by the blade. Further, the first
air passageway has a mixer chamber formed to the air passageway for
generating a turbulent flow to air inhaled from the inhaling port
thereby finely separating and dispersing the particle of the
peroral powder inhaled together with air from the inside of the
capsule.
DESCRIPTION OF THE ACCOMPANYING DRAWINGS
[0023] FIG. 1 is an external view showing an example of a peroral
powder delivery device according to the present invention;
[0024] FIG. 2 is a cross sectional view of FIG. 1;
[0025] FIG. 3 is a fragmentary enlarged view of FIG. 2;
[0026] FIG. 4 is a cross sectional view in a state where holes are
made on both ends of a capsule by a cutter blade;
[0027] FIG. 5 is a cross sectional view in a state where a capsule
is loaded in a body and a power is inhaled from an inhaling
port;
[0028] FIG. 6 is a fragmentary enlarged view of FIG. 5;
[0029] FIG. 7 is a cross sectional view showing another example of
a peroral powder delivery device according to the invention;
[0030] FIG. 8 is an external view of an existent example; and
[0031] FIG. 9 is a cross sectional view of the existent
example.
DESCRIPTION OF PREFERRED EXAMPLES OF THE INVENTION
EXAMPLE 1
[0032] Example 1 of the present invention is to be described in
conjunction with the appended drawings from FIG. 1 through FIG.
6.
[0033] In a peroral powder delivery device according to this
example, a capsule holder 2 for loading a capsule C containing a
peroral powder P such as a powdery medicine or a powdery supplement
to be dosed through an oral cavity is loaded to the body 1 in the
direction perpendicular to the longitudinal direction of the
capsule C held by the capsule holder 2 so as to be capable of
advancing to and retracting from the inside of the body 1. Further,
the capsule holder 2 includes a drawer type plate 4 to be put in
and out of the space 3 inside the body 1 for loading the capsule C.
A recessed groove 5 is formed to the surface of the plate 4 for
slidably holding the capsule C in the longitudinal direction with
both ends of the capsule C protruding from the end edges of the
plate 4. A protrusion 7 is formed to the back surface of the plate
4 for engagement with a stopper protrusion 6 formed at the inlet of
the space 3 in the body 1 such that the plate 4 does not fall off
the body 1. A guide groove 8 is formed for slidably guiding and
supporting the plate 4 in engagement with the stopper protrusion 6
in the direction of putting into and out of the space 3 in the body
1.
[0034] The body 1 has cutter blades 10a, 10b for cutting both ends
of the capsule C that advances into the body 1 while being held by
the capsule holder 2 thereby making holes 9a, 9b on both ends
thereof. The body 1 also has positioning guides 11a, 11b on the
near side of the cutter blades 10a, 10b sliding the capsule that
advances into the body 1 being held in the recessed groove 5 of the
capsule holder 2 in the longitudinal direction and guiding both
ends of the capsule C to be cut by the cutter blades 10a, 10b such
that both ends of the capsule C situate at predetermined positions.
The cutter blades 10a and 10b comprises a pair of blades secured in
parallel with each other with the blade tips being directed in the
direction opposing to the advancing direction of the capsule C that
advances into the body 1 while being held by the capsule holder 2.
The positioning guides 11a and 11b are formed of a pair of
protrusions. Further, pockets 12a, 12b are formed each between the
blade forming the cutter 10a or 10b and the protrusion forming the
positioning guide 11a or 11b disposed on the near side thereof for
discharging cut ends of the capsule C cut by the blade.
[0035] Further, the body 1 has a first air passageway 14 having a
connection port 13a in communication with the hole 9a made on one
end of the capsule C and a second air passageway 15 having a
connection port 13b in communication with the hole 9b made on the
other end of the capsule C. The first air passageway 14 has an
inhaling port 16 for inhaling the peroral powder P in the capsule
C, and the second air passageway 15 has a suction valve 17 that
opens by the suction force from the inhaling port 16 to introduce
air into the capsule C. The suction valve 17 is adopted such that a
valve body 18 is resiliently biased in the direction of closing the
valve by a spring 20 and opened against the resiliency of the
spring 20 by the suction force upon inhalation at the inhaling port
16 via a mouth. Further, the valve has a disciform poppet 19 that
protrudes upon opening from the connection port 13b of the second
air passageway 15 and can advance from the hole 9b of the capsule C
in communication with the suction port 13b into the capsule C.
[0036] The distance between the positioning guides 11a and 11b is
set to a distance corresponding to the shortest length of the
capsule that varies during manufacture of capsules Further, the
cutter blades 10a, 10b are arranged at such positions that they can
cut off the tops of the spherical surface forming both ends of the
capsule C situated to the predetermined position by the positioning
guides 11a, 11b each for a predetermined area thereby capable of
making the holes 9a and 9b each having a diameter substantially
equal with or slightly larger than the opening diameter of the
connection ports 13a and 13b to both ends of the capsule C. That
is, the diameters for the holes 9a, 9b made on both ends of the
capsule C by the cutters 10a, 10b are set each to a size
substantially identical with or larger than the opening diameter of
the connection holes 13a, 13b in communication with the holes 9a,
9b.
[0037] Further, the distance M between the connection port 13a and
the connection port 13b is set to a size smaller than the distance
L between the blade tips of the cutters 10a, 10b for cutting off
both ends of the capsule C. That is, the distance M between the
connection ports 13a and 13b is set shorter than the length of the
capsule C after the both ends thereof have been cut by the cutters
10a, 10b, such thon both ends of the capsule C loaded between the
connection ports 13a and 13b are pressed by the peripheral edges
21a and 21b of both of the connection ports 13a and 13b.
[0038] The constitution of the peroral powder delivery device shown
in FIG. 1 to FIG. 6 is as has been described above, and the method
of use and the operation of the delivery device are to be described
below. As shown in FIG. 1 to FIG. 3, the peroral powder b in the
capsule C can be inhaled from the inhaling port 16 of the body 1 by
extremely simple operations of merely retracting the capsule holder
2 from the inside of the body 1 so as to put the drawing type plate
4 out of the space 3 inside the body 1, then holding the capsule C
containing a predetermined amount of the peroral powder P in the
recessed groove 5 of the plate 4, and advancing the capsule holder
2 into the body 1 so as to push the plate 4 into the space 3 of the
body 1.
[0039] That is, when the capsule holder 2 holding the capsule C in
the recessed groove 5 of the plate 4 is advanced into the body 1,
both ends of the capsule C are caused to slid till predetermined
positions being guided by the positioning guide 11a, 11b, the both
ends are cut by the cutters 10a, 10b as shown in FIG. 4, and the
holes 9a, 9b each having a diameter substantially equal with or
slightly larger than the opening diameter of the connection ports
13a, 13b are made at a good accuracy on both ends thereof. In this
state, the capsule is loaded between the connection ports 13a and
13b of the body 1, the connection ports 13a, 13b and the holes 9a,
9b made on both ends of the capsule C are in communication with
each other. Both ends of the capsule C are pressed by peripheral
edges 21a, 21b of the connection ports 13a, 13b and intensely put
into an intimate contact with the peripheral edges 21a and 21b.
[0040] In the state described above, when air is inhaled from the
inhaling the port 16, the suction valve 17 disposed to the second
air passageway 15 is opened by the suction force and air is
introduced from the hole 9b of the capsule 9 to the inside of the
capsule C. The same time, the peroral powder P in the capsule C is
sucked out from the hole 9a of the capsule C through the first air
passageway 14 to the inhaling port 16, and dosed through the oral
cavity put at the inhaling port 16 into a user's body.
[0041] In this case, since the holes 9a, 9b of the capsule C in
communication with the suction ports 13a, 13b have a size
substantially identical with or larger than the opening diameter of
the connection ports 13a, 13b, the air introduced from the second
air passageway 15 smoothly passes through the inside of the capsule
C and flows to the first air passageway 14, so that the peroral
powder P in the capsule C can be carried by the air stream with no
residues to the inhaling port 16. In addition, when the suction
valve 17 that introduces air from the second air passageway 15 into
the capsule C is opened, since the disk-like poppet 19 advances
from the hole 9b of the capsule C to the inside of the capsule C,
and the poppet 19 causes the air introduced from the second air
passageway 15 into the capsule C to flow inward at a high flow
speed uniformly along the periphery of the hole 9b of the capsule
C, the peroral powder P in the capsule C can be sucked out
thoroughly.
[0042] Further, since both ends of the capsule C loaded between the
connection ports 13a, 13b are pressed by the peripheral edges 21a,
21b of both of the connection ports 13a, 13b and intensely put into
an intimate contact to the peripheral edges 21a, 21b, the peroral
powder P in the capsule C can be prevented from leaking through the
holes 9a, 9b made on both ends of the capsule C and scattering into
the body 1. Further, when breath is erroneously blown inward from
the inhaling port 16, since the suction valve 17 formed in the
second air passageway 15 does not open, there is no possibility
that the peroral powder P in the capsule C flows to the outside
through the second air passageway 15. In addition, when the breath
is blown from the inhaling port 16, since the inner pressure of the
capsule C increases to exert a force of urging both ends of the
capsule C from the inside to the peripheral edges 21a, 21b of the
connection port 13a, 13b, the intimate contact between the both
ends of the capsule C and the peripheral edges 21a, 21b is further
increased to keep air tightness therebetween, scattering of the
peroral powder P in the capsule C into the body 1 can also be
prevented reliably, Accordingly, in a case where the peroral powder
P is a powdery medicine to be dosed into the lungs of a patient
suffering from asthma, etc., a predetermined amount of the powdery
medicine necessary for the therapy can be dosed reliably. Further,
the capsule C emptied after sucking out the peroral powder P can be
ejected easily by merely retracting the capsule holder 2 for
holding capsule C from the inside of the body as shown in FIG. 1 to
FIG. 3.
EXAMPLE 2
[0043] FIG. 7 is a cross sectional view showing another example of
a peroral powder delivery device according to the invention. In the
delivery device of this example, a mixer chamber 22 is formed in
the first air passageway 14 for generating a turbulent flow to the
air inhaled from the inhaling port 16, thereby separating and
dispersing the particle of the peroral powder P inhaled from the
inside of the capsule C together with the air. Since other
constitutions are in common with those for the delivery device
shown in FIG. 1 to FIG. 6, common portions carry identical
reference numerals, for which detailed descriptions are to be
omitted.
[0044] While a powdery medicine to be dosed into lungs through an
oral cavity are in the form of a fine powder such as to be carried
together with breath through a trachea to lungs, in a case where
the separatability and the dispersibility of the particle are poor,
the amount carried by the breath to the lungs is decreased to
result in a disadvantage that the powdery medicine of a necessary
amount can not be dosed. Then, in the peroral powder delivery
device in FIG. 7, the mixer chamber 22 for separating and
dispersing the grains of the peroral powder P inhaled from the
inside of the capsule C is disposed in the first air passageway 14,
so that the powdery medicine to be dosed into the lungs can be
carried reliably by the breath into the lungs. The peroral powder
delivery device of FIG. 7 is not restricted to the use for the
powdery medicine but can also be used for application of dosing
powdery food such as powder supplement and powdery drink through
the oral cavity.
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